CN212004299U - A kind of butterfly valve with strong sealing - Google Patents

Abstract

The utility model discloses a butterfly valve with strong sealing performance, which comprises a valve body, a valve plate is arranged inside the valve body, a sealing ring is fixed on the outside of the valve plate, a valve shaft is arranged inside the valve body, and the The valve shaft runs through the valve body, the inside of the valve shaft rotates with a rotating shaft, the outer side of the top of the rotating shaft is fixed with a first gear, the outside of the first gear is meshed with a second gear, and the second gear is arranged at the top of the valve shaft Inside and fixedly connected with the valve shaft, a through groove is opened on the outside of the valve shaft, a limit block is threadedly connected to the outside of the rotating shaft, and guide rods are hinged at the bottoms of both sides of the limit block, and the guide rods are far away from the limit block A slider is hinged on one side. Through the rotation of the rotating shaft, the limit block is moved downward, so that the two sliders are far away from the rotating shaft. When the arc-shaped plate is further moved to the sealing ring, the sealing ring is squeezed and deformed by the arc-shaped plate, thereby increasing the connection between the valve body and the valve body. The pressure between them increases the tightness with the valve body.

Description

A kind of butterfly valve with strong sealing

technical field

The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve with strong sealing performance.

Background technique

Butterfly valve, also known as flap valve, is a kind of regulating valve with simple structure. Butterfly valve that can be used for on-off control of low-pressure pipeline medium means that the closing member (disc or butterfly plate) is a disc, which rotates around the valve shaft to achieve opening and closing. A valve that can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays the role of cutting and throttling on the pipeline. The butterfly valve opening and closing part is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment.

However, when the current butterfly valve is actually used, due to its poor sealing performance, it is easy to be corroded after long-term use.

Therefore, it is necessary to invent a butterfly valve with strong sealing performance to solve the above problems.

Utility model content

The purpose of this utility model is to provide a butterfly valve with strong sealing performance, which drives the limit block to move downward through the rotation of the rotating shaft, so as to keep the two sliders away from the rotating shaft, and further, when the arc plate moves to the sealing ring, the sealing ring The arc plate is squeezed and deformed, thereby increasing the pressure between the valve body and the valve body, thereby increasing the sealing performance between the valve body and the valve body, so as to solve the above deficiencies in the technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: a butterfly valve with strong sealing performance, comprising a valve body, a valve plate is arranged inside the valve body, a sealing ring is fixed on the outside of the valve plate, and the valve body is There is a valve shaft inside, the valve shaft runs through the valve body, a rotating shaft is arranged inside the valve shaft, a first gear is fixed on the outside of the top of the rotating shaft, and a second gear is engaged with the outside of the first gear. The second gear is arranged inside the top of the valve shaft and is fixedly connected with the valve shaft. A through groove is formed on the outside of the valve shaft. A limit block is threadedly connected to the outside of the rotating shaft. Guide rods are hinged at the bottoms of both sides of the limit block. A sliding block is hinged on the side of the guide rod away from the limit block, the sliding block is slidably connected with the valve plate, and a connecting rod is fixed on the two sides away from the rotating shaft. An arc-shaped plate is fixed on both sides, the arc-shaped plate is slidably connected with the valve plate, and a rotating rod is fixed on the top of the rotating shaft.

Preferably, a valve seat is fixed on the rear side of the valve body, and the sealing ring is arranged between the valve plate and the valve body.

Preferably, a bearing is provided at the connection between the valve shaft and the valve body, and a bearing is provided at the connection between the valve shaft and the rotating shaft.

Preferably, a cavity is opened inside the valve plate, and the limiting block is arranged inside the cavity.

Preferably, an arc-shaped groove is opened inside the valve plate, and the arc-shaped plate is arranged inside the arc-shaped groove.

Preferably, the arc-shaped plate is matched with the valve body, and the limiting block is matched with the through groove.

Preferably, the two sliding blocks are symmetrically distributed with respect to the center of the rotating shaft, and the two arc-shaped plates are symmetrically distributed with respect to the center of the rotating shaft.

In the above-mentioned technical scheme, the technical effect and advantage that the utility model provides:

The user drives the rotating shaft to rotate by turning the rotating rod, drives the limit block to move downward, and further drives the guide rod to move downward, so that the slider on the left moves to the left, drives the connecting rod to move to the left, and further drives the left The arc plate on the side moves to the left, when the arc plate moves to the sealing ring, the sealing ring is squeezed and deformed by the arc plate, thereby increasing the pressure with the valve body, and the arc plate on the right is The same movement method moves to the right, that is, the sealing between the valve plate and the valve body is enhanced again, and the operation is simple and quick. corrosion.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the accompanying drawings that need to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only in the present invention For some of the described embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

Fig. 1 is the overall structure schematic diagram of the present utility model;

FIG. 2 is a schematic diagram of the movement of the slider of the utility model;

Fig. 3 is an enlarged view of the structure of part A of Fig. 1 of the utility model;

FIG. 4 is an enlarged view of the structure of part B of FIG. 2 of the present invention.

Description of reference numbers:

1 valve body, 2 valve plate, 3 seal ring, 4 valve shaft, 5 shaft, 6 first gear, 7 second gear, 8 through groove, 9 limit block, 10 guide rod, 11 slider, 12 connecting rod, 13 arc plate, 14 rod, 15 valve seat, 16 cavity, 17 arc groove.

Detailed ways

In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

The utility model provides a butterfly valve with strong sealing performance as shown in Figures 1-4, comprising a valve body 1, a valve plate 2 is arranged inside the valve body 1, and a sealing ring 3 is fixed on the outside of the valve plate 2 , a valve shaft 4 is arranged inside the valve body 1, the valve shaft 4 penetrates the valve body 1, a rotating shaft 5 is arranged inside the valve shaft 4, and a first gear 6 is fixed on the outside of the top of the rotating shaft 5, so The outer side of the first gear 6 is meshed with a second gear 7, the second gear 7 is arranged inside the top end of the valve shaft 4 and is fixedly connected with the valve shaft 4, the valve shaft 4 is provided with a through groove 8 outside, and the rotating shaft 5 A limit block 9 is threadedly connected to the outside, and guide rods 10 are hinged on the bottoms of both sides of the limit block 9. A slider 11 is hinged on the side of the guide rod 10 away from the limit block 9, and the slider 11 is connected to the valve. The plates 2 are slidably connected, and the two sides away from the rotating shaft 5 are fixedly provided with connecting rods 12, and the sides of the connecting rods 12 away from the rotating shaft 5 are fixedly provided with arc-shaped plates 13. The valve plate 2 is slidably connected, and a rotating rod 14 is fixed on the top of the rotating shaft 5 .

Further, in the above technical solution, a valve seat 15 is fixed on the rear side of the valve body 1 , and the sealing ring 3 is arranged between the valve plate 2 and the valve body 1 to facilitate the user to install the device.

Further, in the above technical solution, a bearing is provided at the connection between the valve shaft 4 and the valve body 1 , and a bearing is provided at the connection between the valve shaft 4 and the rotating shaft 5 to increase the flexibility of the rotating shaft 5 and the valve shaft 4 .

Further, in the above technical solution, a cavity 16 is opened inside the valve plate 2 , and the limiting block 9 is arranged inside the cavity 16 .

Further, in the above technical solution, the valve plate 2 is provided with an arc-shaped groove 17 inside, and the arc-shaped plate 13 is provided inside the arc-shaped groove 17 .

Further, in the above technical solution, the arc-shaped plate 13 is matched with the valve body 1 , and the limiting block 9 is matched with the through groove 8 .

Further, in the above technical solution, the two sliding blocks 11 are symmetrically distributed with respect to the center of the rotating shaft 5 , and the two arc-shaped plates 13 are symmetrically distributed about the center of the rotating shaft 5 .

The specific embodiment is as follows: when the utility model is in use, the user installs the device in the place where it needs to be used through the valve seat 15, the user rotates the rotating rod 14 to make the rotating rod 14 start to rotate, and the rotating rod 14 drives the rotating shaft 5 to carry out the operation. The rotation further drives the first gear 6 to rotate, thereby driving the second gear 7 to rotate, and the second gear 7 drives the valve plate 2 to rotate, thereby realizing the closing of the valve. The sealing performance is enhanced, thereby increasing the sealing performance of the device. When the rotating shaft 5 rotates, it drives the limit block 9 to move downward, and further drives the guide rod 10 to move downward, so that the slider 11 on the left moves to the left. , drives the connecting rod 12 to move to the left, and further drives the left arc-shaped plate 13 to move to the left. When the arc-shaped plate 13 moves to the sealing ring 3, the sealing ring 3 is squeezed and deformed by the arc-shaped plate 13. Thereby increasing the pressure between the valve body 1 and the valve body 1, further increasing the sealing performance between the valve body 1 and the valve body 1, and the right arc plate 13 moves to the right in the same movement mode, that is, the valve plate 2 and the valve body 1 move to the right. The airtightness between the two parts is enhanced again, and the user rotates the rotating rod 14 in the opposite direction, the left arc plate 13 can move to the right, and the right arc plate 13 moves to the left while the valve plate 2 rotates, thereby opening the valve , the operation is simple and fast, and this embodiment specifically solves the problem that the current butterfly valve in the prior art is easily corroded after long-term use due to poor sealing performance during actual use.

This practical working principle:

Referring to the accompanying drawings 1-4 of the description, when the utility model is in use, the user installs the device at the place where it needs to be used through the valve seat 15, and the user rotates the rotating rod 14 to make the rotating rod 14 start to rotate, driving the first gear. 6 rotates, thereby driving the second gear 7 to rotate, and the second gear 7 drives the valve plate 2 to rotate, thereby realizing the closing of the valve, and at the same time as the rotating shaft 5 rotates, the slider 11 on the left moves to the left, driving the connecting rod 12 Move to the left, further drive the left arc plate 13 to move to the left, when the arc plate 13 moves to the sealing ring 3, the sealing ring 3 is squeezed and deformed by the arc plate 13, thereby increasing the connection with the valve body. 1, the arc plate 13 on the right moves to the right in the same movement mode, that is, the sealing between the valve plate 2 and the valve body 1 is enhanced again, and the user rotates the rotating rod 14 in the opposite direction, that is, It can realize that the left arc plate 13 moves to the right, and the right arc plate 13 moves to the left while the valve plate 2 rotates, thereby opening the valve, and the operation is simple and quick.

Certain exemplary embodiments of the present invention have been described above by way of illustration only, and it goes without saying that for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, various different Modifications are made to the described embodiments. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims (7)

1. A butterfly valve with strong sealing, comprising a valve body (1), characterized in that: a valve plate (2) is provided inside the valve body (1), and a sealing ring is fixed on the outside of the valve plate (2). (3), a valve shaft (4) is arranged inside the valve body (1), the valve shaft (4) penetrates the valve body (1), and a rotating shaft (5) is arranged inside the valve shaft (4) to rotate, A first gear (6) is fixed on the outer side of the top of the rotating shaft (5), a second gear (7) is engaged with the outer side of the first gear (6), and the second gear (7) is arranged on the valve shaft (4). ) inside the top end and is fixedly connected with the valve shaft (4), a through groove (8) is formed on the outside of the valve shaft (4), and a limit block (9) is threadedly connected to the outside of the rotating shaft (5), and the limit block (9) Guide rods (10) are hinged on the bottoms of both sides, and a slide block (11) is hinged on the side of the guide rod (10) away from the limit block (9), and the slide block (11) is connected to the valve plate. (2) Sliding connection, connecting rods (12) are fixed on the two sides away from the rotating shaft (5), and arc plates are fixed on the side of the connecting rods (12) away from the rotating shaft (5). (13), the arc-shaped plate (13) is slidably connected with the valve plate (2), and a rotating rod (14) is fixed on the top of the rotating shaft (5). 2. A butterfly valve with strong sealing performance according to claim 1, characterized in that: a valve seat (15) is fixedly arranged on the rear side of the valve body (1), and the sealing ring (3) is arranged on the valve plate (2) and the valve body (1). 3. A butterfly valve with strong sealing performance according to claim 1, characterized in that: a bearing is provided at the connection between the valve shaft (4) and the valve body (1), and the valve shaft (4) is connected to the rotating shaft ( 5) Bearings are provided at the connection. 4. A butterfly valve with strong sealing performance according to claim 1, characterized in that: a cavity (16) is opened inside the valve plate (2), and the limit block (9) is arranged in the cavity (16). 16) Inside. 5. A butterfly valve with strong sealing performance according to claim 1, characterized in that: an arc-shaped groove (17) is opened inside the valve plate (2), and the arc-shaped plate (13) is arranged in an arc-shaped groove (17). Inside the slot (17). 6. A butterfly valve with strong sealing performance according to claim 5, characterized in that: the arc-shaped plate (13) is matched with the valve body (1), and the limit block (9) is matched with the through groove (1). 8) To match. 7. A butterfly valve with strong sealing performance according to claim 1, characterized in that: the two sliding blocks (11) are symmetrically distributed about the center of the rotating shaft (5), and the two arc-shaped plates (13) are symmetrical about the center of the rotating shaft (5). The rotating shaft (5) is symmetrically distributed in the center.

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